Glass-molding machine



ivhoY am a citizen of the use the same, reference being GLASS-MULDER@ MaCHIlE.

Larnaca Epecieaton of Letters Eatent.

lpatented duly 2Q,

Appiication flied. september 2e, 191e. serial. iig. sessie.

To all 'whom t may concern:- i

.Be it known'that l', HARRY O. Eiserne,

United States, residingvatDetroit, county ofr ldayne, State of Michigan, have invented a certain nenT and useful llmprovenient y and exact ldescription of the sanie,such as will enable'others skilled in Athe art to which it pertains to make and had to the accompanying drawings, which foi-ni a part of this specification.

My inventionrelates to glass-making and particularly to the molding of platev glass cally delivering glass toV a series of traveling containers or molds,niolding the g into desired forming/bile' in such containers, .automatically reniving the nolded glass from Isuch container for delivery to an an- .healing furnace and means for maintain into uniform thickness. vis to provide means for 'or' receptacle ofmo-lten glass into the mold or container and lfor-y making such discharge automaticamping plate,

ing desired temperature. of the glass during such operation 'and for maintaining desired temperature of the containers.

lin Glass-Molding Mw; chines, and declare the following to he a .full, clear,

Glass This application shows an improvement in the mechanism set forth in my application for patent dated March 8, 1919, Serial Nambe 281,341.

,- chanical means for device is to provide inemolding plate glass in such form as t'o avoid the costly operations connected with glass grinding which is a necessary partl of the manufacture as now practised. A further object is to provide means for stamping or molding the glass A further object keeping the glass at a desired temperature.

The obj ect of my While; in the moldv A still further object is to provide means for 'maintaining a the series of traveling ,ln the draWings`,- i l iff. Y Figure l is a side elevation of my device A'45 desired temperature in glass molds.

in connection with a glass furnace.

' .Fi-g2 is a detail sectional view of the vat for regulating the discharge cally intermittent. l

.3 is a sectional vienT along the-lines -ll'l of Fig. l looking downV on my d@- efr.oin alcove. ,.3 1 if igytissa; detail'sectional view of the a"iild "andl'the stationary 'cam for'liftingithe plnngei's in the mold.

vention, 1nutvvhich is common to inanhin-eryv Fig. 5 is' a plan view of the shelf upon ivliicli the inold rests during the compres sion period.

Fig. 6 is 'anv elevationof trie bracket sup porting the tainping4 plate.-

n the drawings, a represents a glass furnace of approved design and aboutwhich there is no novelty. This furnace is'provided with an outlet spout ofdesired re fi'actory material. The spout b is fitted 'with a liftvalve e hinged at 02 and provided with a manually operable handle al. lt is apparent that this lift v l o inav he operated otherwise if. desi; d. Ilhis lift valve is constructed of material adapted to moet the demands of the yuse to which it Will'he put. The spout empties into a discharge pas sageivay e shown in sectional elevation in Fin'. 2, which consists of a receptacle of fioor e2, side Walls not shown in the difav7- ings, and an apron c3 rigidly secured there! to and made a part thereof which partially dams up the fluid glass, restraininel it to flow underneath such apron tliroi'gli an orifice e4 in a stream of such dimension as is desired. a nap valve f hinged' at f2 passes across the orifice e4' and closes the saine when it is not desired glass to flow therethrough. j' is held in position by means surrounding. spindle Aand resti compression hy ineans of an ove ledge ,fr through which such spindle passes. i ,f2 must he of suiiie The flap valve of a springl This. spring strength to force the iiap valve oonnivard .closing the orifice et to restrain the iioxv .belt separated such distance as he desired from one another.

Such is carried drums ,i 'driven oy mechanism not shown` and which is no paireof in v inplaten g carried in the, art. Each mold or "bythe endless belt is brought under the delivery receptacle e andas 'it 'is positioned to permit 'the fluid endless chain thereunder it lifts the flap valve fi by means of an arm z' which arm terminates at its lower extremity in a rollerz'2, which roller passes over and is lifted by va liange or projection j carried by such mold orplaten gi' The lifting of the flap valve f permits the molten glass to How out from the discharge passageway e into the mold or plateng. The arm z' forms one of a pair of arms, -one mounted oneach side of the flap valve f and projecting downwardly on 'each receptacle e carrying the roll'er 2.

' To mold or yform the molten glass in desired shape in the platen a tamping plate .is provided which is carried at the lower end.

of 'a plunger l7:2. This plunger is mounted in bearings g carried in an overhanging frame or bracket g2, so as 'to permit intermittent vertical reciprocal movement of said plate at desired predeterminedintervals. A' shelf g3 is likewise carried by such bracket and serves as a table to support the platen g in which. the molten glass is being com` pressed during the period of compressi0n, l -As will be noted'the shelf g3, shown in AFig.v 5, is grooved or recessed V,longitudinally of the direction of travel of the* platens, as indicated at` g4, to permit the travel therethrough of plungers Z carried byV tofore setforth, for vertical movement and is actuated by means of a sharply convex cam#l which co-acts with the lugs. carried on the plunger 7a2 whichsupports said plate. Such plate is held in its upraisedposition by means of an expansion springka which sprlng 1 s compressed during the downward movement of the plunger 4when actuated by the cam r. As the ca'm passes'over the lug s the Ispring again lifts the plungerto its upiaised position. The cam 7 is carried by `a shaft z' oppositely from a pulley wheel t2. This pulley wheel t2 is operated bymeans of a belt n over a drum pulley ft2. l It is ap parent that this tamping plate may bel other- 1 Wise operated, but the means shown herein will serve the purpose.

The endless belt which carries the platens is momentarily halted' as each platen containing molten glass rides'up en the shelf g3 andthe glass therein contained is com-y pressed to a desired thicknessby the down- Ward action of the tamping plate 4Further movement ofthe' endless chain',l however, brings the platen carrying, the molten glass up on an inclined planeor 'stationary cam u' which forces the plungersV Z1 upward lifting the molten* glass 'from the platen g--so the side of the same may be carried to the vannealing fur- During the several foregoing operationsjit has been necessary to retain the molten glass above a certain temperature and to prevent a too rapid cooling of the mass. This' is a complishe'd` first, by means of a hot blast d1- rected in tlieform of a sheet by means of a' `blast pipe o on the molten. lass as it discharges. into each platen.

charges within an inclosed run way w which uch blast diseneircles the moving platens. .The discharg- 'Y ing ofsuc'h blast into such inclosed run Way serves to retain the temperature of' the .-glass and thetemperature of the platens, above that of the atmosphere.

What. I claim is:

by an endless belt, adapted to pass under thev discharge opening of such passageway,4

means carried by such flap valve adapted to lco-act with means carried by eachglassreceptacle for raising such flap valveduring the passage of the glass receptacle' there' under, 'means for closing suchvalve after the passage of the receptacle from under the discharge passageway, means forlevelf ing andsmoothing the glass in said molds during the intermittent stoppage' and mov ing of said belt, means for heating such molten glass during its discharge into the glass molds, and means for retaining.' such heat.

2. The combination of a tank for containing molten glass, a discharge orifice in suchv tank,"a valve vclosing such orifice, means for opening such valve, a passageway adapted to discharge the glass from such orifice into a'series of traveling glass molds forming an endless chain. lan intermittent valve closing such passageway, means for opening such valve by the positioning of each glass mold thereunder, means for closing such `valve after the glass mold g has passed fromunder such discharge passageway, a leveling plate adapted tosautomati` cally descend at predetermined intervals leveling the molten glass carried in each .glass mold into, a plate v of uniform thickness, meansv carried in the bottomv of each vmold for ejecting theglass plate therefrom' as the moldrides overan inclined plane, a liot blast'pipedisposed` for directing a hot vblast against thefglass as it discharges into 'le molten glass into e empty molten glass inte eacli meid as it' passes thereunder, e valve adapted to riormelly Close suoli diselfiarge passageway bue provided with means for being opened by der, leveling means adapted i'er being auto matieally brought into Contact with the molten glass in esuli mold as seid mold passes under such means compressing the plete of uniform thick ness, means for ejeeting the molten glass from eaelimold, means for directing het blast against Athe"molteny glass es it discharges into the molds3 and means for pre- .is venting the molt-eri glass 11i the molds from too rapid cooling eeere tile same is lifted the-reil'romb 4. En a glass melding machine, e reservier fer containing molten glass, e series of glass 20 "molds carried in an endless chain, means for discharging molten glass from seid reservoir rem. esel; meld is it passes siieeessii/elyV under such discharge mearisj means `lor eetiiatin'g such discharging means by .each

.25 glass mold as it comes underneath `the diseherge orifice, means for leveling and smoothing the molten glass into e plete of uniform thiekness while it is is the mold,

an inelosed run-way for suoli endless Chain er glass molds, and means for directing 'the liot biast through the inelosure o' this run- Wey on the discharged molte glass as it escapes from the reservoir inte the mold.

5. The combination of e molten glass reservoir provided. with a. discharge passageway, e series el' traveling glass receptacles adapted te pass tiiereumer so that 'liss may be discharged therein, means vlor d eating :i het blast on the molten giass .passing through seid discharge j@esswgevv'ay and e covered run 'Way for sueli glass receptacles into which such liet blast diselmrgesn 6. The combination of a, molten' glass reservoir, a discharge mssagewey or suoli reservoir, analisis-like series of glass recep* erwies adapted to oe brought underneath such discharge passageway, an inelosure for die run way oi suoli elmiiililre series ef glass receptacles. and means for directing het blast tliroiigli the roof ofi' suoli ineiesure e against the discharging streem of molten glass.

In testimony whereof sign this speeiiieation. 

